At One Place

21 km/h to m/s

21 kilometers per hour in meters per second
21 km/h = 5.833333 m/s
m/s = km/h × 5/18

21 kilometers per hour is 5.833333 meters per second. To get there, multiply by 0.2777777778.

Values either side

Kilometers per hour near 21, converted to meters per second.
Kilometers per hour Meters per second
17 km/h 4.722222
18 km/h 5
19 km/h 5.277778
20 km/h 5.555556
21 km/h ← 5.833333
22 km/h 6.111111
23 km/h 6.388889
24 km/h 6.666667
25 km/h 6.944444

How the conversion works

The relationship is m/s = km/h × 5/18. Both units measure speed, so the conversion is a fixed factor that never changes.

Common questions

What is 21 km/h in meters per second?
21 km/h is 5.833333 m/s.
How do you convert kilometers per hour to meters per second?
Multiply by 0.2777777778.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked